Property, Plant and Equipment

12 Months Ended

Dec. 31, 2015

Property, Plant and Equipment.

Property, Plant and Equipment

6. Property, Plant and Equipment

        Property, plant and equipment at December 31, 2015 and 2014 consist of the following (in thousands):

	December 31, 2015			December 31, 2014
Land	$	90		$	90
Buildings		15,332			15,332
Building improvements		5,169			5,032
Software, machinery and equipment		14,634			11,397
		35,225			31,851
Less: accumulated depreciation		(27,970	)		(26,539	)
Property, plant, and equipment, net	$	7,255		$	5,312

        Depreciation expense related to property, plant and equipment was $1.5 million, $1.4 million, and $1.4 million for the years ended December 31, 2015, 2014 and 2013, respectively.